Escher Wyss Limited

Friedrich Schneebeli

Mario Biondetti

Heinz Annen

Helmut Pirchl

The rotor forms part of a tubular turbine with a ring-shaped electrical machine. The rim of the rotor is deformed by the centrifugal forces, with large dimensions involved. Those portions of the rim which are to be circular at operating speed are, in the state of rest, produced to deviate from the circular by the amounts of deviation occurring in the rotating state relatively to the state of rest.

Deformable rotor for a hydroelectric machine

An hydroelectric machine is disclosed wherein the rotor of an electric machine is arranged around the rotor of a hydraulic machine, the internal rotor comprising the turbine blades which engage the external rotor to transmit torque therebetween. Each of the internal and external rotors is mounted in a separate radial bearing and the turbine blades of the internal rotor are connected to the external rotor by means of an articulated coupling which permits relative radial movement therebetween. It is preferred to include force compensating means for transmitting circumferential forces between the rotors. Suitable such means comprise an hydraulic servo-motor associated with each blade of which the pressure chambers are interconnected by means of a ring conduit.

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Oberengstringen, Switzerland

Friedrich Schneebeli